that did not stop osama bin laden from ordering the 9/11 attacks. a strike against syria would be designed to convince its dictator, bashar al-assad, not to use chemical weapons again but air strikes never succeeded in changing the behavior of another middle east dictator, iraq's saddam hussein, until he was finally captured and hanged. >> pelley: david martin at the pentagon. david, thank you. at least 100,000 people have been killed in the syrian war, but many, many more are refugees. holly williams is on the syrian border with turkey. >> reporter: for two years, syrians have been fleeing their country. two million people have been driven out by a grueling civil war. the aladekany family crossed into turkey today after government soldiers shelled their town in idlib province in northern syria. >> reporter: the father told us they've sought >> reporter: the father told us they've sought refuge in turkey twice before and have then gone back home, hoping things would improve. are you frightened for your family? family? >> yes, of course, i am afraid.